Masao Tadokoro, often called Masa or Masa-san, is a supporting character in the anime Sorairo Utility. He is an elderly gentleman, described as seventy-five years old, with short gray hair and brown eyes. He is a regular and familiar presence at the local golf practice range, where he is one of three regulars who frequent the facility.

Masa has a cheerful and warm personality, with a gentle sense of humor that makes him approachable and well-liked by those around him. He is known for his strong putting skills, demonstrating a solid understanding of the game that comes from long experience. He serves as a spirited mentor figure, particularly toward the protagonist, Minami Aoba. His regard for Minami is especially affectionate, as he fondly refers to her as his angel. This nickname reflects his supportive and encouraging attitude toward her as she begins her journey with golf. Masa takes pleasure in seeing others enjoy the sport and contributes to the welcoming and relaxed atmosphere at the range. Through his interactions, he offers quiet guidance and companionship, helping to ground the story in the simple, communal joy of the game.